Automatic sprinkler-head.



No. 828,093. PATENTED AUG. 7; 1906.

. N. L. DANPORTH.

AUTOMATIC SPRINKLER HEAD APPLICATION FILED MAmzo, 1905.

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mvau'ron W @WW Atty v this block rests upon the bar in the middle.

NEWMAN LORINGDANFORTH, OF BUFFALO, NEW YORK AUTOMATIC SPRlNKLER-HEAD.

Specification of Letters Patent.

Iatented Aug. '7. 1906.

Application filed March 20,1905. Serial No- 251.130.

To all when. Mammy concern:

Be it known that I, NEWMAN LORING DAN- FORTH, a citizen of the United States, residing at Buffalo, in the State of New York,- have invented certain new and useful Imrovements in Automatic Sprinkler-Heads, of which the following is a specification.

My invention relates to stationary fire extinguisher systems and especially the automatic sprinkler nozzles used therein, and particularly to means for releasing the outlet valve when the temperature rises to the desired point for putting the sprinkler into operation. Its principal objects are, to provide for great strength and rigidity of the holding devices without requiring a heavy or cumbersome fusible device for holding the parts in position; to make a more easy an certainly operating releasing device, and to generally improve the structure and operation of automatic sprinkler heads. These objects and other advantages which will hereinafter appear, I attain by means of the construction illustrated in a preferred form in the accompanying drawing, wherein Figure 1 is a perspective view of the head, a part of the frame being broken away;

Figure2 is a vertical central section taken through the holding frame and the valve;

Figure 3 is a plan view of the collapsible link of the holding frame; and

Figure i'is an enlar ed cross-section taken through the fusible link 16 on line 44 in Figure 3. a

The water pipe nozzle 5 may be formed in the usual manner, with a'rigid frame 6 which has a head 7 upon which is attached a distributing vane 8 held thereon by means of set screw 9 and the nut 9 as is customary. The adjusting screw 9 preferably ends in a point and engages a block 10 which has a conical depression to receive the screw, and

holding frame consisting of the diagonal legs 11 and 12 whose ends rest loosely upon the collapsible cross- This bar is composed of 13 and 14, which at their ends are provided with seating heads 15 for holding the diagonal braces 11 and are formed as shown Hi Fi ure 3 to engage on inclined surfaces 17, W ich prevent the two members 13 and 14 from sliding longitudinally past each other without spreading laterally.

the two like parts The ends of the bars 13, 14, are held in contact with each other b means of a strap 16 which engages one 0 them and is I or soldered by some material which will melt at the temperature which the sprinkler head is desired to discharge, as will be well understood.

soldered to the other, being either all fusible- The frame formed by the diagonal braces 11 and 12'rests onv a valve plate 19 preferably made of porcelain, and this on a pliable washer 20 and a glass or mica disk 21 closing the mouth of the pipe 5 as is usual in such constructions.

It will be observcd that in this construction the pressure exerted by the screw 9 upon the frame is directly and is maintained as long as the twomembers 13 and 14 of the central retaining strut are not allowed to slide'past each other in a longitudinal direction, and this is prevented by the inclined surface 17, since'the parts are prevented from spreading motion by the strap 16. Thus a great deal of power in holding the frame on the valve is obtained without placing any very great strain upon the fusible member or solder which holds the straps 16; and it will be understood that when the temperature rises the collapsing of either one of the straps 16, when melted, will allow the corresponding end of the member of the central strut to move out sidewise, thus allowing the surfaces 17 to slide upon one another elongating the brace, and thereupon the ends of the diagonals 11, 12, will be allowed to spread horizontally and release the pressure upon the valve, sprinkler head. The water strikes the vane 8 and this may be provided with inclined wings as shown, in order to revolve when desired, or otherwise to distribute the stream of water in the form of a spray. Various other advantages of this device will readily occur to those familiar with its use.

Having thus described my invention and illustrated its use, what I-claim as new, an desire to secure by Letters Patent, is the following:

1. In an automatic sprinkler head the co ntaken upon the valve 19 opening the I do by said diagonals and comprising two bars engaging their 2. In an automatic sprinkler head a col lapsible frame comprising diagonal members in pairs with their ends opposite each other at the center, a compound retaining link held,

slide longitudinally arid said parts being prevented from laterally spreading by means of a fusible retaining devicel6, substantially as described.

5. In an automatic sprinkler head the comengaging each other on an lnclined surface and retained together by fusible members ad usting pressure plug 9, a valve and a seatends, substantially as deing block on the pressure plug, of a collapsible frame between said block and the valve comprising diagonal members having their inner ends opposite each other, and a com- 11 and 12, and the central retaining strut pound shoulderedretaininglink consisting of comprising the members 13 and 14 having two bars engaging each other on inclined surthe shoulders 15 for seating the diagonal: faces and each held at one end by two of the braces and engaging upon a diagonal surface diagonals, and fusible links connecting the l7,the said members being held together at free end of each bar to the other bar, sub,- the ends only by means of the fusible link 16, stantially as described. Substantially as described. In. testimony whereof I have hereunto 4. In an automatic sprinkler head the comsigned my name in the presence of the two I the valve and rigid frame, the subscribed witnesses.

bination witn I NEWMAN LORING DANFORTK scribede 3.- In an automatic sprinkler headthe combination with the diagonal retaining braces ad ust1ng nut 9 and the diagonal braces 12, of a collapsible central strut for retaining said diagonal braces in place, comprising two \Vitnesses: members engaging each other so that they MOREY O. BARTHOLOMEW. are required to spread laterally in order to A. GLENNI BARTHOLOMEW.

bination with a rigid frame containing the 

